No abstract

An 80-year-old man had high serum immunoglobulin G4 (IgG4) concentration and fibrous thickening of the soft tissue mass surrounding the region from the abdominal aorta to the bilateral iliac arteries, suggestive of IgG4-related periaortitis. He presented to our emergency department with sudden-onset abdominal pain and lumbago. Computed tomography revealed a ruptured abdominal aorta. He was a poor candidate for open surgery due to his hostile abdomen. Therefore, endovascular aneurysm repair was performed. No consensus about the surgical indication for IgG4-related arterial disease has been reached yet. We believe that a novel indicator is needed for this disease.

No abstract

A small beach cleaning robot has been developed. The robot is equipped with two external sensors for autonomous navigation. A scanning range finder measures signboards stood at the border of a working field and estimates self-position of the robot. A gyro sensor measures the azimuth angle of the robot and controls the orientation of the robot to a desired angle. The robot moves in an indicated work area of the beach autonomously and collects the garbage without manual operation.